| 樟子松人工林林龄对其林内土壤理化性质的影响 |
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| 引用本文： | 李红.樟子松人工林林龄对其林内土壤理化性质的影响[J].防护林科技,2020(4):26-27,41. |
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| 作者姓名： | 李红 |
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| 作者单位： | 1.辽宁省沙地治理与利用研究所 |
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| 摘 要： | 通过对辽西地区沙地上不同林龄的樟子松人工林内土壤主要理化指标的研究,结果表明:樟子松的生长可影响土壤理化性质,不同的树龄影响程度有所差异;在樟子松人工林成为成熟林之前,随着林龄的增加,土壤的容重降低,平均持水量、孔隙度有较大幅度的增加,平均有机碳、全氮、全磷含量也有所增加;成为成熟林后,樟子松人工林内土壤的容重增幅小于成熟林之前,平均持水量有所降低,孔隙度稍有增加,各养分含量有一定程度的降低;樟子松人工林内土壤肥力整体水平以近成熟林(树龄35年左右)时为最高,改善土壤理化性质的效果也最为明显。
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| 关 键 词： | 樟子松人工林 林龄 土壤理化性质 |
Effects of Forest Age on Soil Physicochemical Properties in Pinus sylvestris var. mongolica Forest Plantation |
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| Li Hong.Effects of Forest Age on Soil Physicochemical Properties in Pinus sylvestris var. mongolica Forest Plantation[J].Protection Forest Science and Technology,2020(4):26-27,41. |
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| Authors: | Li Hong |
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| Institution: | (Liaoning Sandy Land Management and Utilization Research Institute,Fuxin 123000,China) |
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| Abstract: | By selecting artificial forests of Pinus sylvestris var.mongolica of different ages on the sandy land in western Liaoning Province,the changes of the main indicators of soil physicochemical properties are studied.Results shows that Pinus sylvestris var.mongolica can affect the physicochemical properties.Different tree ages have different degrees of influence;before Pinus sylvestris var.mongolica plantation became mature,as the forest age increase,the soil bulk density decrease,the average water holding capacity&porosity increase significantly,and the average organic carbon,total nitrogen,and total phosphorus contents also increase.After becoming a mature forest,the soil bulk density of Pinus sylvestris var.mongolica plantation increase less than before the mature forest.The average water holding capacity decrease,the porosity increase slightly,and the nutrient content decrease to a certain extent.The level is highest when the tree is nearly 35 years old,and the effect of improving soil physicochemical properties is the most obvious. |
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| Keywords: | Pinus sylvestris var mongolica forest plantation stand age physicochemical properties |
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